Apparatus for oxygen therapy and the like



May 15, 1928. J 1,669,971

w. E. COLLINS APPARATUS FOR OXYGEN THERAPY AND THE LIKE Filed Feb. 21,1927 5 SheetsSheet6=L\ May 15, 1928.

1,669,971 w. E. COLLINS APPARATUS FOR OXYGEN THERAPY AND THE LIKE FiledFeb. 21, 1927 5 Sheets-Sheet 2 fill/0111431 Wdrrenll'tolluzl cases,

Patented May 15, 1928.

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APPARATUS FOR OXYGEN THERAPY AND THE LIKE.

Application filed February 21, 1927. Serial No. 169,804.

In the treatment of certain pulmonary oxygen or other gas is frequentlyadministered, and various forms of apparatus have been devised for thepurpose of maintaining an atmospheric current of redetermined characterabout the patient.

The experiments ofDr. Paul Roth, Battle Creek, Michigan, and Alvin L;Barach of New York city, along these lines have shown that it ispossible to establish about the patient an oxygen envelope or chamber ofpredetermined concentration, and I have collaborated with thesegentlemen in the development of commercial apparatus for accomplishingthis result.

In my prior application, Serial No. 7700,

" filedFebruary 7, 1925, I disclosed a form of emergency transportationand use.

apparatus which while satisfactory as a relatively stationary apparatusfor use in hospitals lacked, however, that portability and compactnesswhich would adapt it for In the development of this phase of the subjectI devised the form of. apparatus illustrated at page 1214 of the issueof October 9, 1926,- of the Journal of the American Medical Association,and my present invention is in part inclusive of the apparatus shown insaid publication and in part presents improvements upon and refinementsover all heretofore known forms of apparatus.

In the drawings accompanying this application I have therefore shown theapparatus in its entirety but-only claim so much thereof as I believe tobe-my own invention. --.-F-ig. 1--isan end view of the apparatus.

Fig. 2 is a side view thereof, partly in section. 4 I Fig. 3-is asomewhat diagrammatic view illustrating the apparatus in use.

Fig. 4 is a detail section through the canopy or hood.

Figs. 5 and 6 are detail views of the rotatably adjustable dischargetubes, and

Fig. 7 is a general view showing the apparatus with flow meter and testset attachments.

As in my prior application, I provide a container 1 for the coolingmedium and a container 2 for the purifyin medium. These containers aremounte upon a wheeled carriage 3 at opposite sides of a verticallydisposed main standard 4. and are connected to each other adjacent theirlower ends for the circulation of the oxygen or other gas therethrough,as indicated-at 5.

cracked The oxygen is supplied from a suitable container 6 through asupply pipe 7 which preferably discharges into a flow'meter 8 ofstandard type. The flow meter indicates the flow of the oxygentherethrough in terms of liters per minute.

From the flow meter, the oxygen passes through a discharge pipe 9 intothe upper end of the purification container 2. This container is usuallyfilled with soda lime and is screened at its bottom, as indicated at 11,and is preferably provided with a drain cook 12 to permit drainagethereof when necessary;

After purification in the soda lime chamber 2, the oxygen passes.through the connecting pipe 5 into the cooling chamber 1. This chamberis preferably filled with ice and the oxygen circulates through the icein direct contact therewith so as to be cooled thereby. The icecontainer is also screened at its 'bottom' as indicated at 13, and'isprovided with a drain trap 14 which not only permits drainage of thewater resulting from the'melting of the ice into the catch receptacle1'5 but also holds back theslight pressure under which the apparatusoperates.

The purified and cooled oxygen discharges from the upper end of the'icecontainer, as indicated at 16, into a vertically disposed delivery tube17 which is carried bya yoke 18 at the upper end of an extensionstandard 19 telescopically mounted inthe main standard for limitedvertical adjustment relative .-thereto. ,The extension 19 carries a"hori zontally' disposed hood supporting arm 20. At the free end of thisarm is a cross-piece 21 from which is yieldably hung by springs 12 ahood 23 into which the delivery tube 17 enters from above, as shown inFig." 4, and within which it discharges through the rotatablyadjustable. discharge tubes 24, detailed in Figs. 5 and 6. These tubes24.- permit the oxygen to be directed at various angles within the hoodaccording to the position of the patients body within the hood. The freeends of the adjustable discharge tubes 24 may be conveniently suspendedfrom the top of the hood, as by means of the cords 25.

Theoxygen' discharged within the hood is withdrawn therefrom through areturn tube standard and disposed between the containers 1 and 2. Theblower 27 connects as at 29 with the upper end of the lime container 2so as to maintain a continuous circulation of the purified and cooledoxygen through the hood. By mounting the blower and its motor adjacentthe bottom of the apparatus, the vibration is better absorbed and thepatient is relieved to a greater extent of the annoyance of the runningmotor.

The hood itself is arranged as'a fabric curtain of generally tubularform adapted to enclose the head and shoulders of the patient with itsfree edges tucked beneath the'bed clothing so as to maintain asubstantially air-tight enclosure about the patient. ,This curtain isprovided with a transparent window 31 and with an inlet opening in theform of a slitted flap 32 by means of which various articles may beintroduced into the hood without the necessity of disturbing the hooditself. This slitted flap opening is adapted to be tightly sealed at allother times by being overfolded u on itself and fastened as by means'ofthe c ps 33. The springs 22 which yieldably suspend the hood from thesupporting arm 20' permit a limited come and go of the hood when thepatient moves in such a way as to tend to stretch the fabric of thehood.

For the purposes of this application, I have shown in connection withthe apparatus a test set '34 of standard construction,

which is adjustably mounted upon the main standard of the apparatus. Theintake tube 35. of the test set connects with the ice container at thedischarge 16 thereof so that the sample oxy en withdrawn for testing'will be a sampe which has been' -passe throu h the soda lime to relieveit of its carbon dioxide content.

From the foregoing, it will be seen that,

' the apparatus is readily portable so as to allow its convenientmovement from bed to bed or room to room and is capable of assembly anddisassembly with the minimum of time and effort. Some degree ofadjustvment is provided for by-means of the telescoping standards andswivel yoke connection for the hood-supporting arm and the direction ofdischarge of the oxygen into the hood may be varied at will by means ofthe rotatably adjustable branch tubes 24. The apped mlet opening 32 ofthe hood permits certam articles to be passed to the patient withoutsubstantial loss of the oxygen within the hood and without the necessityof disarranging the hood or bed clothing, and in general the apparatuspermits the circulation of a predetermined concentration of oxygen aboutthe patient under conditions which can be made extremely exact andaccurate.

Various modifications-in the construction and operationof my device mayobviously be I resorted to, ,without departing from the spirit of myinvention if withinthe limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

1. A portable knock down circulation a paratus, comprising a hoodadapted to fitted about the patient, a source of oxygen supply, awheeled base, a standard rising vertically therefrom, a pair ofvertically disposed containers mounted on said base at either side ofsaid standard'and connected with each other, one of said containerscontaining a purifying medium and the other container containing acooling medium, a motor-driven blower mounted -onsaid standardintermediate of said containers, a connection from the oxygen supply tothe purifying container, a connection from the cooling container to thehood, a hood-supporting arm mounted on said standard, a rotatablyadjust-able branch tube at,- ran'ged within the hood at the dischar ofsaid tube, a return tube from sai hood to' the blower, and a connectionfrom the.

blower to the purifying chamber whereby the spent air from within thehood is continuously drawn into said purifying and cooling chambers andwhen cooled an p fied is recirculated through said hood.

2. A- portable knock down circulation a paratus, comprising a hoodadapted to e fitted about the patient, a source of o en supply, awheeled base, a standard rising vertically therefrom, a pair ofvertically disposed containers mounted on said base at either side ofsaid standard and connectend urii ed with each other, one of saidcontainers containing a purifying medium and the;

other container containing a cooling medlum, a motor-driven blowermounted on said standard intermedmte of sa d containers, a connectionfrom the oxygen sup-,

ply to the purifying container, a -connec tion from the coolingcontainer,,to thehood, a telescoping section mounted on said standard,an adjustable yoke carried by said telescoping section and carrying sa-idischarge connection to the hood, fa hood-supporting arm mounted on saidextension standard, a rotatably adjustable branch tube arranged withinthe hood at the dischar e end of said tube, a return tube from sai hoodto, the.

of said standard and connected with eachother, one of said containerscontaining a purifying medium and the other container contaming acooling medium, a motordriven blower mounted on said standardintermediate of said containers, a connection from the oxygen supply tothe purifying container, a connectlon from the cooling container to thehoo d, a rotatable ad'ustable branch tube arran ed within the 00d at,the dischar e end 0 said tube, a return tube from sai hood to theblower, and. a connection from the blower to the purifying chamberwhereby the spent air from within the hood is continuously drawn intosaid purifying and cooling chambers and 'when cooled and purified isrecirculated through said hood.

4. A portable knock down circulation apparatus comprising a hood adaptedtobe fitted ab out the patient, a source of oxygen supplfy, a base, astandard rising vertically there rom, a pair of containers mounted onsaid base and connected with each other, one ofsaid containerscontaining a purifying medium and the other container containingjustable branch tubes arranged within the hood at the discharge end ofsaid tube, a return tube from said hood to the blower, and 'a connectionfrom the blower to the urifyin chamber whereby the spent air rom wit inthe hood is continuously drawn into said purifying and cooling chambersand when cooled and purified is recirculated through said hood.

In testimony whereof I aflix my si ature.

. WARREN E. CO INS.

